毒理性
在32名不吸烟的男性和女性(8名18至26岁的男性和女性,以及8名51至76岁的男性和女性)中调查了代谢和肺部功能反应,他们分别暴露于8种不同条件下的每种条件2小时:(1)过滤空气(FA),(2)0.13 ppm过氧乙酰硝酸酯(PAN),(3)0.45 ppm臭氧(O3),(4)0.60 ppm二氧化氮(NO2),(5)0.13 ppm PAN + 0.45 ppm O3(PAN/O3),(6)0.13 ppm PAN + 0.60 ppm NO2(PAN/NO2),(7)0.60 ppm NO2 + 0.45 ppm O3(NO2/O3),以及(8)0.13 ppm PAN + 0.60 ppm NO2 + 0.45 ppm O3(PAN/NO2/O3)。受试者在预设的负荷下交替进行休息(n = 3)和自行车测力计运动(n = 3),以产生大约25 L/min(BTPS)的通气分钟量。在暴露前后测定功能残气量(FRC)。在暴露前后和每次运动后5分钟测定用力肺活量(FVC)。在整个暴露期间监测心率,并在每个运动期的最后2分钟测量VE。暴露于FA、PAN、NO2和PAN/NO2对任何肺部或代谢功能指标都没有影响。臭氧主要是导致观察到的肺部功能效应的原因。O3暴露的反应与三种O3混合物的反应之间没有显著差异,表明污染物之间没有交互作用。...
The metabolic and pulmonary function responses were investigated in 32 non-smoking men and women (8 men and 8 women 18 to 26 years of age, and 8 men and 8 women 51 to 76 years of age) who were exposed for 2 hours to each of 8 conditions: (1) filtered air (FA), (2) 0.13 ppm peroxyacetyl nitrate (PAN), (3) 0.45 ppm ozone (O3), (4) 0.60 ppm nitrogen dioxide (NO2), (5) 0.13 ppm PAN + 0.45 ppm O3 (PAN/O3), (6) 0.13 ppm PAN + 0.60 ppm NO2 (PAN/NO2), (7) 0.60 ppm NO2 + 0.45 ppm O3 (NO2/O3), and (8) 0.13 ppm PAN + 0.60 ppm NO2 + 0.45 ppm O3 (PAN/NO2/O3). The subjects alternated 20-min periods of rest (n = 3) and cycle ergometer exercise (n = 3) at a work load predetermined to elicit a ventilatory minute volume (VE) of approximately 25 L/min (BTPS). Functional residual capacity (FRC) was determined pre- and post-exposure. Forced vital capacity (FVC) was determined before and after exposure, and 5 min after each exercise period. Heart rate was monitored throughout each exposure, and VE was measured during the last 2 min of each exercise period. Exposure to FA, PAN, NO2, and PAN/NO2 had no effect on any measure of pulmonary or metabolic function. Ozone was primarily responsible for the pulmonary function effects observed. There was no significant difference between the responses to O3 exposure and the responses to the three O3 mixtures, indicating no interactions between the pollutants. ...
来源:Hazardous Substances Data Bank (HSDB)